What are the effects of temperature on the strain hardening coefficient (n) and the strain rate sensitivity exponent (m) of materials in general?
After doing a few tests on an aluminium alloy, I found that n and m decrease with the temperature (3 tests: 12°C; 26°C; 48°C). I was hoping for a confirmation.
Thank you for your help,
Antoine
Hello Antoine Sorellet,
The results obtained do not contradict the hitherto known theory of the coefficient of excitation (n) and the stretch sensitivity (m) of the materials. As the temperature rises, they decrease due to the change in the creep mechanism of the materials. The coefficient of excitation (n) and the stretch sensitivity (m) will increase if the temperature decreases. For the different materials "n" and "m" are different and depend on the type of the structure of the material and the primed elements.
What is the type of the aluminum alloy? Does it contain high levels of aluminum like 1050 series?
Thank you very much for your answers.
The aluminium alloy's type is unknown.
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